Engine-throttle.



A. A. & G. H. STEWARD. ENGINE THROTTLE.

I APPLIOATION FILED $0160.28, 1910. 1,030,140. Patented June 18, 1912.

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A. A. & G. H. STEWARD. ENGINE THROTTLE.

1,030,140. APPLICATION FILED 1330.28, 1910. Patented June 18 Z SHEETS-SHEET 2.

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unrrnn snares Parana" ormon ALDEN A. STEWARD AND GEORGE E. STEWARID, 0F RUTLANI), VERMONT.

ENGINE-THROTTLE.

Specification of Letters Patent.

Patented June 18, 1912.

Application filed December 28, 1910. Serial No. 599,697.

To all whom it may concern:

Be it known that we, ALDEN A. STEWARD and Gnonon H. STEWARD, citizens of the United States, residing at Rutland, county of Rutland, State of Vermont, have invented certain new and useful Improvements in Engine-Throttles, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a throttle and air control and particularly to a structure for controlling the flow of a carbureted fluid to an internal combustion engine.

The invention has for an object to provide a novel and improved construction whereby the throttle and air valves are adjustably connected so that more or less air may be admitted relative to the position of the throttle valve and the extent of movement of the air valve in the ordinary travel of its connecting means may be adjusted by means mounted upon the stem of the throttle valve.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawingsFigure 1 is an elevation showing the application of the invention; Fig. 2 is an enlarged vertical section of the adjusting sleeve upon the throttle valve stem; Fig. 3 is a similar view upon the line 33 of Fig. 1; Fig. 4: is a horizontal section on line t*t of Fig. 1; Fig. 5 is a similar section on line 55 of Fig. 1; Fig. 6 is a like view with the parts in different shifted positions; and Fig. 7 is a detail section of a modified form of the adjusting means.

Like numerals of reference refer to like parts in the several figures of the drawings.

The numeral 10 designates the mixing chamber which may be of any desired construction or configuration, for instance the casing as shown having the inlet 11 at one end for gas or other fluid fuel and an outlet 12 at the opposite end adapted to communicate with an engine. At one side of the mixing chamber 10, an air inlet 13 is pro vided and has mounted therein a pivoted air valve 1 1 which may be of any desired character, for instance a disk or butterfly valve, pivoted at 15 and having its extendedstem 16 provided with a crank arm 17. An operating rod or link 18 is pivotally connected to the free end of this arm as shown at 19. The outlet 12 to the engine is provided with a suitable pivoted valve 20, for instance similar in construction to the air valve 1 1. The valve 20 is formed with an outwardly extending stem 21 from which an operating arm 22 projects laterally, which arm is provided with a series of openings forming an adjusting connection for a driving element, as shown in Fig. 1. This arm may be secured to the stem in any desired manner, for instance by means of a clamping screw as shown at 23. The stem 21 is provided with a crank portion 24 which is provided with a laterally extending sleeve 25. WVithin this sleeve, the adjusting rod 26 is slidingly mounted and is pivotally connected at its end 27 with the link 18, as shown in Figs. 1 and 5. The opposite end of the adjusting rod 26 is pivoted at 28 to a link 29 which is pivoted at 30 to a slide collar 31 mounted upon the upper end of the valve stem 21. This pivotal connection of the link 29 may be effected by means of the ears 32 carried by the collar 31 and between which the end of the link 29 is pivoted, as shown at 30.

The collar 31 may be adjusted upon the stem 21 in any desired manner, for instance as shown in Figs. 3 and 4:,where the upper end of the stem 21 is threaded as shown at 33 and adapted to be engaged by a toothed wheel 34. carried upon the shaft 35 which is mounted in the casing 36. This wheel is held in its set position by means of the contact spring 37 carried in recesses 38 of the casing as shown in Fig. 3. The casing may be of any desired form, for instance com posed of opposite parts secured together as shown in Fig. 1. The shaft 35 is provided with an operating handle 39.

In Fig. 7, a modified form of the adjusting means for the collar 31 is shown. and

comprises a nut 10 threaded upon the upper end 41 of the valve stem 21 and seated at its lower portion in the circumferential groove d2 at the upper end of the collar 31.

In the operation of the invention, it will be seen that the air and throttle valves are adjustable relative to each other and thatwhen the point of connection 27 of the rod '18 with the rod 26 is in alinement with the axis of the stem of the throttle valve, the oscillation of this stem through the connection 22 does not produce any movement of the air valve. WVhen this point of connection 27 is shifted to one side of the axis of the throttle valve, an opening of the air valve is effected, as shown in Fig. 5, and

when the stem of the throttle valve is oscillated to the extreme of its movement to theleft, the air valve will be closed, and also the throttle valve, as shown by dotted lines in that figure. The air valve is opened to an extent approximating the movement imparted to it through the crank lever 24 upon the shaft of the throttle valve and such movement is equal to the are described by the crankupon the stem of the throttle valve. If the said point of connection 27 be shifted from the axis of the throttle valve, the movement of the air valve through its crank connection is correspondingly varied. This construction permits a similar movement of the throttle and air valves or a movement of one proportional to the other and effects a practically uniform mixture to the engine. The extent of the movement of the air valve relative to the throttle valve may be varied as required by an adjustment of the collar upon the stem of the throttle valve which shifts the point of connection of the rod 18 with the rod 26 toward and from the axis of said valve and thus controls the extent of movement of the air valve. It will be seen that the invention presents a simple, eflicient and economically constructed controlling means for the throttle and air valves by which the mixture supplied to the engine may be varied according to the conditions necessary in use.

Having described our invention and set forth its merits, what we claim and desire to secure by Letters Patent is- 1. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber provided with valve stems, a crank carried by each of said stems, a connecting member carried by one of said cranks, a member adj ustably mounted in the other crank to which said connecting member is connected, and means for adjusting said member to effect relative different movements of said valves.

2. In a throttle valve control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber provided with valve stems, a connection between said valve stems adjustably carried by one of said valve stems, and slidably mounted means upon the stem of one of said valves to vary the relative movement of the other valve.

3. In a throttle control a mixing chamher having air and fuel inlets, air and throttle valves controlling communication with said chamber, a connection between said valves, and slidably mounted means for shifting said connection relative to the axis of one of said valves. v

4. I11 a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber, a connection between said valves comprising a crank carried by the stem of one valve, said crank comprising a sleeve, a member of said connection carried by a sleeve, and means for shifting said member within said sleeve.

5. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber, a connection between said valves comprising a crank carried by the stem of one valve, said crank comprising a sleeve, a member of said connection carried by the sleeve, a link pivoted to said member, and means carried by the stem ofthe valve provided with a crank for longitudinally shifting said link.

6. In a throttle control, a mixing chamberhaving air and fuel inlets, air and throttle valves controlling communication with said chamber, a connection between said valves comprising a crank carried by the stem of one valve, said crank comprising a sleeve, a member of said connection carried by said sleeve, a link pivoted to said member, and a sleeve slidably mounted upon the valve stem carrying said crank and connected to said link to shift it longitudinally.

7. In a throttlecontrol, a mixing chamher having air and fuel inlets, air and throttle valves controlling communication with said chamber and having stems one of which is provided with a threaded portion, a connection between said valves comprising a crank carried by the stem of the valve with the threads, said crank comprising a sleeve, a member of said connection carried by the sleeve, a link pivoted to said member, a sleeve slidably mounted upon the valve stem carrying the crank and connected to said link to shift it longitudinally, and means mounted upon said sleeve to engage the threaded portion of said stem to adjust said sleeve thereon.

8. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber and having stems one of which is provided with a threaded portion, a connection between said valves comprising a crank carried by the stem of the valve with the threads, said crank comprising a sleeve, a member of said connection carried by the sleeve, a link pivoted to said member, a sleeve slidably mounted upon the valve stem carrying said crank and connected to said link to shift it longitudinally, a casing mounted upon the upper portion of said sleeve, and a shaft disposed within said casing provided with a toothed wheel to engage the threaded portion of said stem.

9. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber, a connection between said valves comprising a crank carried by the stem of one valve, said crank comprising a sleeve, a member of said connection carried by the sleeve, a link pivoted to said member, a sleeve slidably mounted upon the valve stem carrying said crank and connected to said link to shift it longitudinally, said stem being provided with a threaded portion, a casing mounted upon the upper portion of said sleeve, a shaft disposed within said cas ing and provided with a toothed wheel to engage the threaded portion of said stem, and a retaining spring carried by said casing to engage said wheel.

10. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber, a crank arm carried by the axis of said air valve, a crank member carried by the stem of said throttle valve, means for oscillating said throttle valve, a laterally extending sleeve from the crank upon the throttle valve stem, an adjusting rod slidably mounted upon said sleeve, and a connection between said adjusting rod and said crank arm.

11. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber, a crank arm carried by the axis of said air valve, a crank member carried by the stem of said throttle valve, means for oscillating said throttle valve, a laterally extending sleeve from the crank upon the throttle valve stem, an adjusting rod slidably mounted upon said sleeve, and a connection between said adjusting rod and said crank arm, and means carried by the stem of the throttle valve for adjusting said rod.

12. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber, a crank arm carried by the axis of said air valve, a crank member carried by the stem of said throttle valve, means for oscillating said throttle valve, a laterally extending sleeve from the crank upon the throttle valve stem, an adjusting rod slidingly mounted upon said sleeve, a sliding collar mounted upon the stem of the throttle valve, a link pivoted to said collar and to said rod and a connection between said adjusting rod and said crank arm.

13. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber, a crank arm carried by the axis of said air valve, a crank member carried by the stem of said throttle valve, means for oscillating said throttle valve, a laterally extending sleeve from the crank upon the throttle valve stem, an adjusting rod slidingly mounted upon said sleeve, a sliding collar mounted upon the stem of the throttle valve, a link pivoted to said collar and to said rod, means carried by said collar for adjusting it longitudinally upon said stem and a connection between said adjusting rod and said crank arm.

14. In a throttle control, a mixing chamber having air and fuel inlets, air and throttle valves controlling communication with said chamber, a crank arm carried by the axis of said air valve, a crank member carried by the stem of said throttle valve, means for oscillating said throttle valve, a laterally extending sleeve from the crank upon the throttle valve stem, an adjusting rod slidingly mounted upon said sleeve, a sliding collar mounted upon the stem of the throttle valve, a link pivoted to said collar and to said rod, means carried by said collar for adjusting it longitudinally upon said stem, an operating arm mounted upon said stem and provided with adjusting connections for a driving element, and a connection between said adjusting rod and said crank arm.

In testimony whereof we aifix our signatures in presence of two witnesses.

ALDEN A. STEWARD. GEORGE I-I. STEWARD.

W'itnesses:

CHAS. A. FULLER, FRANK W. GARY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

